Stability of Seeded Rod Photocatalysts: Atomic Scale View

Eran Aronovitch; Philip Kalisman; Lothar Houben; Lilac Amirav; Maya Bar-Sadan

doi:10.1021/acs.chemmater.6b00040

Stability of Seeded Rod Photocatalysts: Atomic Scale View

Eran Aronovitch, Philip Kalisman, Lothar Houben, Lilac Amirav, Maya Bar-Sadan

Ben-Gurion University of the Negev, Technion - Israel Institute of Technology, Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

Abstract

The displacement of single atoms may have detrimental effects on the functionality of nanoparticle photocatalysts. Understanding the atomic-scale phenomena is the key to the rational design of photocatalysts to prevent undesired events during their synthesis and operation. Here, we used high resolution TEM to study such phenomena within seeded rods of CdSe in CdS, mounted with bimetallic particles of Au and Pd. We show the mobility of Pd atoms during deposition and photocatalysis and relate that to photocatalyst degradation processes that limit overall photocatalyst efficiency. We also show the advantage of the bimetallic composition and the specific internal rearrangement of the two metals for better efficiency and stability to provide a more generalized understanding of prospective design principles.

Original language	American English
Pages (from-to)	1546-1552
Number of pages	7
Journal	Chemistry of Materials
Volume	28
Issue number	5
DOIs	https://doi.org/10.1021/acs.chemmater.6b00040
State	Published - 8 Mar 2016

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/acs.chemmater.6b00040

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title = "Stability of Seeded Rod Photocatalysts: Atomic Scale View",

abstract = "The displacement of single atoms may have detrimental effects on the functionality of nanoparticle photocatalysts. Understanding the atomic-scale phenomena is the key to the rational design of photocatalysts to prevent undesired events during their synthesis and operation. Here, we used high resolution TEM to study such phenomena within seeded rods of CdSe in CdS, mounted with bimetallic particles of Au and Pd. We show the mobility of Pd atoms during deposition and photocatalysis and relate that to photocatalyst degradation processes that limit overall photocatalyst efficiency. We also show the advantage of the bimetallic composition and the specific internal rearrangement of the two metals for better efficiency and stability to provide a more generalized understanding of prospective design principles.",

author = "Eran Aronovitch and Philip Kalisman and Lothar Houben and Lilac Amirav and Maya Bar-Sadan",

note = "Funding Information: M.B.S. and E.A. are grateful for the support they received from Drs. Vladimir Ezersky, Einat Nativ-Rot, and Dmitri Mogilyanski of the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev (BGU), Israel, and from Dr. Pradipta Sankar Maiti of the Department of Chemistry at BGU. Part of this research was carried out in the framework of Russell Berrie Nanotechnology Institute (RBNI) and the Nancy and Stephen Grand Technion Energy Program (GTEP). This research was supported by The Israeli Centers of Research Excellence (I-CORE) program, (Center No. 152/11), ISF grant 475/12, and the Adelis Fund. Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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AU - Amirav, Lilac

AU - Bar-Sadan, Maya

N1 - Funding Information: M.B.S. and E.A. are grateful for the support they received from Drs. Vladimir Ezersky, Einat Nativ-Rot, and Dmitri Mogilyanski of the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev (BGU), Israel, and from Dr. Pradipta Sankar Maiti of the Department of Chemistry at BGU. Part of this research was carried out in the framework of Russell Berrie Nanotechnology Institute (RBNI) and the Nancy and Stephen Grand Technion Energy Program (GTEP). This research was supported by The Israeli Centers of Research Excellence (I-CORE) program, (Center No. 152/11), ISF grant 475/12, and the Adelis Fund. Publisher Copyright: © 2016 American Chemical Society.

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N2 - The displacement of single atoms may have detrimental effects on the functionality of nanoparticle photocatalysts. Understanding the atomic-scale phenomena is the key to the rational design of photocatalysts to prevent undesired events during their synthesis and operation. Here, we used high resolution TEM to study such phenomena within seeded rods of CdSe in CdS, mounted with bimetallic particles of Au and Pd. We show the mobility of Pd atoms during deposition and photocatalysis and relate that to photocatalyst degradation processes that limit overall photocatalyst efficiency. We also show the advantage of the bimetallic composition and the specific internal rearrangement of the two metals for better efficiency and stability to provide a more generalized understanding of prospective design principles.

AB - The displacement of single atoms may have detrimental effects on the functionality of nanoparticle photocatalysts. Understanding the atomic-scale phenomena is the key to the rational design of photocatalysts to prevent undesired events during their synthesis and operation. Here, we used high resolution TEM to study such phenomena within seeded rods of CdSe in CdS, mounted with bimetallic particles of Au and Pd. We show the mobility of Pd atoms during deposition and photocatalysis and relate that to photocatalyst degradation processes that limit overall photocatalyst efficiency. We also show the advantage of the bimetallic composition and the specific internal rearrangement of the two metals for better efficiency and stability to provide a more generalized understanding of prospective design principles.

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JO - Chemistry of Materials

JF - Chemistry of Materials

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ER -

Stability of Seeded Rod Photocatalysts: Atomic Scale View

Abstract

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